Paper feed for typewriters



Dec. 17, 1929. I o. SCHLICHTER 1,740,433

PAPER FEJ E D FOR TYPEWRITERS b Filed OCT). 20, 1928 2 Sheets-Sheet 1 :41??? w w M a w i anveni oz attozmea d Dec, 17, 1929. o. SCHLICHTEP: 1,740,438

PAPER FEED FOR TYPEWRITERS Filed Oct. 20, 1928 2 Sheets-Sheet 2 wueutoz Win/0% attorney Patented Dec. 17, 1929 FFICE OSCAR SCHLICI-ITER, OF HAMILTON, OHIO, ASSIGNGR T0 KRAUTH & BENNINGI'IOFEN, 0F HAMILTON, OHIO, A FIE-51V]:

PAPER FEED FUR TYPEWRITERS Application filed Gctober 20, 1928. Serial No. 313,911.

This invention relates to an improvement in typewriter attachment for supporting and unreeling multi or a plurality of webs preferably from a single roll to and upon a platen or writing table, whereupon the webs are compiled in a superposed arrangement for manifolding purposes. The webs contain form printing and the forms of the several webs are relatively aligned, set in registry, and clamped upon the table in position for typing.

ll he improvements primarily are directed to type of machine as disclosed in an earlier application tiled by me May 24, 1927, Serial l lo. 193,919, with the general features embodied therein incorporated herein.

In this type of machine, the several webs are drawn from a multi Web supply roll, ich individually passing over a floating gravity roller and thence over a guide roller in a tired journal, directing the web in a plane with the writing platen or table.

The present improvement relates to the in tel-position of paper gripping rollers between the gravity and guide rollers and between which all of the webs pass to hold the same against retrograde motion, thereby relieving the served portion of the webs upon the writing table against potent backward strains of the floating tension rollers and permitting the webs to be freely drawn in a forward direction.

It is, therefore, an object of my invention to provide simple and effective means for gripping the supply webs aft-er withdrawn from the supply roll, to withhold the same normally against retrograde motion, selffrceing with the forward feed of the webs, and releasable at will, for backing the webs, in making the adjustment of the webs upon the writing table.

Another object of the invention in a machine of the character herein referred to, is to journal a plurality of guide rollers as a unit upon a hinged bearing frame capable of be ing swung from its normal horizontal position-in plane with the table to a vertical or at an angle to the table for accessibility to the rolls in threading the webs thereover when loading the machine.

Other features and advantages of the invention will be more fully set forth in the description of the accompanying drawings forming a part of this specification, in which:

Figure l is a top plan view of the device with. the webs loaded therein.

Figure 2 is a section on line 2-2, Figure 1.

Figure 3 is an end view of a portion of the rear end of the machine embodying the present improvements.

Figure 4 is a section on line 4=l, Figure 3.

Figure 5 is a detailed end view of the web gripping mechanism.

The mechanism primarily provides a web support, platen and pedestal for Elliot Fischer typewriting or billing machines, the typewriter being translatably supported upon the pedestal above the platen, the upper sides of the machine serving as tracks therefor.

The webs inthe plural number are single roll wound. This form of supply roll being merely a convenient method for merchandising and use, is supported in a suitable support below the table portion of the machine, and the several webs are suitably unreeled, each web individually passing over a floating tension roll, thence between gripping rolls to guide rolls directing the webs in plane with the table, and thence upon and over the writing platen, bringing the webs in superposed arrangement upon the platen for manifolding purposes, and whereupon they are held under tension and in registry as to their form printing, so that they can be suitably typed upon. The webs can be conveniently drawn forwardly and the advanced or delivered portions torn from the strips or webs across a tearing blade at the forward end of the machine.

The platen mechanism and the method for clamping and holding the sheets or webs upon the platen and the control therefor is substantially the same as that shown and described in the aforesaid application, being treadle operated, the treadle in the present instance also serving to control the gripping rolls for separating the rolls in backing the webs.

Referring to the drawings, l1 indicates rollers.

side frames held together by cross rods 22 and cross bars 3-8 to form a pedestal struc ture for supporting the printing platen 4 and typewriter, the typewriter, not shown, being translatably supported upon the side rails 66 extending rearwardly of the pedestal and from which the Web supply roll or rolls is dependingly' supported.

A roll of multi-web paper 8 is hung beneath the frame of the machine on depending brackets 9. The brackets 9 are dovetailed into the side frames 6-6 and bound together by a tie rod 10. Their lower endsare slotted to provide hooks engaging the respective ends of a shaft or spindle 11 supporting the roll 8 and rotatable therewith.

. A u-shaped rack 12 is pivoted to the side frames 66 and is disposed at the feed side of the roll and toward the end of the device. The rack is of such length as to clear the floor beneath the machine and is rigidly maintained in position, slanting away from the rollby'means of a pair of arms 12.

The arms 12, one at each side of the rack, are pivoted thereto as at 12 and extend to the brackets 9; Pairs of slots are provided the arms and adapted to engage over pins on the bracket 9. One pair of these slots, namely, 12, maintains the rackin service position and another pair 12 is for sustaining it out from below the machine during loading of the roll. V

The rack isfabricated of stampings to provide opposingly related slots 13 in its side arms in which a plurality of horizontally disposed rollers 14 are slidably mounted. The rollers have reduced end portions engaging the slots, the shoulders formed thereby preventing longitudinal displacement of the The number of rollers 14 corre sponds to the number of webs of paper in the roll. The side arms of the rack are formed of pairs of flat pieces spaced apart by the lower crosspiece and spacer plates at the top to provide the slots 13 and formed at the top to encircle the pivot studs.

Above the rack and between the side frame or rails 66-66, a plurality of parallel guide rolls 15 are journaled in a journal frame 16 hinged-1y secured to the side rails 6, adapting the guideroll ers as a unit with the journal frame to be swung from the normal posltion in plane with the writing platen upwardly to a vertically inclined position, rendering the rollers more accessible in engaging the webs thereover when loading the machine.

A pair of paper gripping rolls are inter posed between the gravity tension rollers 14 and the guide rollers 15, arranged to permit 1,.the webs to' be drawn in a forward direction for advancing the webs and locked against any back-ward or reverse motion, so that the served portion of the paper is free from the depressing weight of the tension rolls when making the adjustment of the Several Webs upon the writing table as to their form registry and alignment and in engaging the paper upon pins at the forward end of the writing platen, after which the gripping rolls can be positively released or separated to offer free movement of the paper in a reverse direction, allowing the paper to be drawn'back under the weights of the tension rollers to take out the slack, drawing theserved portion tautly over the writing platen.

The gripping rolls comprise a roll 17 having its opposite ends journaled in brackets 1818 fixed to the rack frame 12 and a short width eccentric roll 19 fixed upon the shaft 20, the shaft 20 having its opposite ends journaled in the brackets 1818.

The roll 17 preferably sustains the full width of the paper, while the eccentric roll only engages the central portion thereof and is positioned to come in wedging contact with the paper and roll 17 under any backlash of the paper or when the forward pull or advance of the paper is stopped,'so that the webs are bound or clamped between the rolls, with the served portion relieved of the weight of the tension rollers 14.

The roll 17 at one end is provided with a pinion 21 fixed to its axis and in mesh with a pinion 22 loose on shaft 20 of the eccentric roll 19. A pawl lever 24 is fixed on the end of the shaft 20 adjacent the loose pinion 22 and carries a pawl 25 engaging with the teeth of the pinion 22, the pawl 25 locking the pinion against reverse rotation.

The roll 17 is free to rotate with the forward feed or travel of the paper which also releases the eccentric roll, allowing the paper to be withdrawn from the supply roll, the pinions idling during the forward travel of the paper. and as soon as the pull on the paper is stopped the eccentric roll under the influence of the tension rolls drops back into con tact with the roll 17, gripping the paper.

To release the rolls 17 and 19, the pawl lever 24 is rocked by a treadle 26 connecting with the pawl lever through a cable 27 having one end fixed to the treadle, at its opposite end to one end of the pawl lever, and guided over an idler sheave 28 journaled on the pedestal.

Depressing the treadle 26 rocks or swings the pawl lever, revolving the pinions 21 and 22 through the pawl 25 engaging with the a lever mechanism mounted beneath the platen operatively connected with the treadle 26, and in its normal positon forcibly bears against a pair of stationary clamp lugs or fingers 29 at opposite sides of the platen which grip the opposite edges of the paper upon the platen, clamping the paper to the platen.

Pins 30-30 are provided at the forward end of the writing platen for engagement through apertures in the webs, the pins serving as guides for bringing the webs into relative alignmentand the preprinted forms thereon into registration, and also positively anchors the forward end of the webs. The apertures are provided at definite spacing longitudinally of the webs and bear a relation to the preprinted form lengths.

A hingedly mounted cross plate 33 having a tearing edge extends across the forward end of the writing platen and is operated to engage over the pins and in connection with the lever mechanism beneath the writing platen for actuating the writing platen, and thus the cross plate is under the influence of the spring pressure, moving the platen in its normal position for holding the webs against displacement from the pins.

For advancing the paper from one form length to a second or the distance of the aperture spacing to bring the subsequent forms of the several webs in position upon the writing platen, the treadle is depressed, which raises the forward cross plate and depresses the rear end of the writing platen when releasing the paper, so that it can be disengaged from the pins and drawn forwardly a re quired amount. The depression of the treadle likewise actuates the pawl lever for the gripping rolls, releasing the gripping rolls, freeing the paper of its grip, which is guided over the gripping roll 17 from the floating rollers to the guide rollers in line with the printing platen.

Thus, the full weight of each respective tension roller is upon its web, thereby applying the necessary tension for unreeling the webs from the supply roll and for drawing the same tautly over the writ ing platen when engaged with the pins preliminary to loclring or clamping the paper upon the platen by the cross plate and clamp fingers. Since the pressure on the treadle is released, the estertric roll 19 moves into contact with its companion gripping roll 17, looking or withholding the webs against reverse motion or feed under the weight of the tension rollers, and relieves the paper beyond the gripping rolls of the pressure of the tension rolls.

Having described my invention, 1 claim:

1. In a device of the character .Qclosed. a frame, a platen mounted in said frame for supporting one or a plurality of webs in superposed relation for manifolding, a journal and spindle carried by the frame beneath the platen for supporting a multi-web wound supply roll of paper, guide rollers journaled in said frame, one for each web of the supply roll, guiding an unreeled portion of the webs from beneath the platen to and in plane with the platen, a pair of gripping rolls in the path of the web between said guide rollers and supply roll and between which the webs pass, said gripping rollers cooperating to prevent retrograde motion of the webs, and floating rollers, one for each web, each bearing upon a respective web fol-applying tension upon the web between the gripping rolls and supply roll.

2. In a device of the character disclosed, a frame, a platen mounted in said frame for supporting a web of paper, a journal and spindle carried by the frame beneath the platen for supporting a supply roll of paper, a pair of gripping rolls in the path of an unreeled portion of the web extending to the platen, cooperating to grip the web and prevent retrograde motion thereof, and a floating roller bearing upon and applying tension on the web between the supply roll and gripping rolls.

3. In a device of the character disclosed, a frame, a platen mounted in said frame and supporting a web of paper, means carried by the frame for supporting a supply roll of paper, a pair of gripping rolls in the path of an unreeled portion of the web to the platen from the supply roll, said rolls cooperating to grip the web and prevent retrograde motion thereof, a floating roller bearing upon and applying pressure on the web between the supply roll and gripping rolls, and means for throwing said gripping rolls out of cooperation, extending the floating roller pressure to the web portion upon the platen beyond said gripping roll for backing up the web and drawing the same tautly upon the platen.

4. In a device of the character disclosed, a frame, a platen mounted in said frame and supporting a web of paper, means carried by the frame for supporting a supply roll of paper, a pair of gripping rolls in the path of an unreeled portion of the web to the platen from the supply roll, said rolls cooperating to grip the web and prevent retrograde motion thereof and allowing free forward motion to the web, tension means for applying pressure on the web between the supply roll and gripping rolls, and means for throwing said gripping rolls out of cooperation, extending the retarding pressure to the web portion upon the platen beyond said gripping roll for backing up the web and drawing the same tautly upon the platen.

5. In a device of the character disclosed, a frame, a platen mounted in said frame and supporting a web of paper, a pair of gripping rolls in the feeding path of the Web to the platen from the supply source, said rolls cooperating to grip the web and prevent retrograde motion thereof, "a 1 floating roller bearing upon and applyingipressure on'the Web between the supply source and gripping rolls, and meansforthrowing said gripping rolls out of'cooperation, extending the floating rollerpressure to the Web portion upon the platen beyond said gripping'roll for backing up the Web and drawing the same tautly upon the platen.

.6. In a device of the character disclosed, a fra-lne aplateni mounted in said frame for supporting a Web of paper, means for applyinga retarding pressure upon the Webas it leaves its supply source, a pair of gripping rolls in' the feeding path of the Web to the platen'froin the supply source,respectivel} comprising an eccentric roll anda concentric roll, cooperating to grip the Welo and prevent retrograde motion thereof, gearing transinittingly connecting said rolls, adapting said rolls to he revolved With' the forward motion of the Web'for non-impeding the feed of the paper, pawl mechanism engaging with one of said gears, and means for actuating said pawl in a direction "for positively rotating said gears for roll separation, adapting the Web retarding pressure tof be extended to the portion upon the platen for backing-up service in adjusting the Web upon the platen and drawingvit tautly over the platen.

In witnesswvhereoflil hereunto subscribe my name.

n OSCAR SCHLIGHTER. 

